Gas-lighting attachment



(No Moljel.)

- Patented. m 23; I899.

J. E. PRUNTY.

GAS LIGHTING ATTACHMENT.

(Application filed Feb. 8, 1899.)

T Zia/62%;?

T NOHRIIS Pinks co. Pnormu'mo w summon. o.c

Patented May 23, 1899.

J. E. PRUNTY. GAS LIGHTING ATTACHMENT.

(Application filed Feb. 8, 1899.)

2 Sheets-Sheet 2.

JO ZIaZLPrZ (No Modal.)

NITED STATES PATENT OFFICE."

JOHN E. PRUNTY, OF BALTIMORE, MARYLAND.

GAS-LIGHTING ATTACHM ENT.

SPECIFICATION forming part of Letters Patent No. 625,698 dated May 23, 1899. Application filed February 8, 1899. Serial No. 704,965. (No model.)

To all whom it may concern.-

Be it known that I, JOHN E. PRUNTY, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented new and useful Improvements in Lightin g Attachments for Incandescent Gas-Lamps, of which the following is a specification.

This invention relates to lighting attachments for incandescent gas-lamps, and has for its object to provide apilot-hurner of novel construction which automatically operates when the lamp is closed to ignite the incandescent burner and simultaneously shut off the supply of gas to the pilot-burner.

To these ends myinvention consists in the features and in the construction, combination, and arrangement of parts hereinafter described, and particularly pointed out in the claims following the description, reference bein g had to the accompanying drawings, forming a part of this specification, wherein- Figure 1 is a sectional elevation of an incandescent gas-lamp with my improved attachment applied thereto. Fig. 2 is a vertical section taken at right angles to Fig. 1.

Fig. 3 is a detail sectional view of the pilotburner and cook. Fig. 4 is a detail view illustrating the means for adj ustably connecting together the two members. of the link which connects the door to the pilot-burner.

In the present instance I have shown my invention as being appliedto a street-lamp but it will be evident that it may be applied to incandescent gas-lamps of various descriptions.

Referring to the drawings, the numeral 1 indicates a lamp post, on which is fixed a frame 2, supporting at its upper end a hood 3.

The numeral 4 indicates a gas-supply pipe provided with a stop'cock 6, as usual. the upper threaded end of the gas-pipe 4 is screwed the burner-pipe 7, and formed on or attached to the lower end of the burner-pipe is a horizontal disk 8, on which is supported a glass globe 9, that is fitted at its upper end in the hood 3. Fitted on the upper end of the burner-pipe is the burner 11 of ordinary construction, and supported over the burner by any suitable means is an incandescing mantle 12. Formed on the upper end of the burnerpipe 7 is a laterally-projecting conical nipple 18, provided with a central duct or gas-passage 14, that communicates at its inner end with the interior of the burner-pipe. Formed in one side of the nipple and communicating with the gas-passage 14 is an aperture 15, and screwed in the end of the nipple is athreaded needle-valve 16, by means of which the passage'of the gas through the aperture 15 is regulated. Rotatably fitted on the nipple is a sleeve 17,'having formed therein a port 18, adapted to be thrown into and out of register with the aperture 15 in the nipple by turning the sleeve, and fitted in said sleeve and communicating with the port 18 is a small tube 19, on the outer or free end of which is fixed a laterally-projecting burner-tube 20, closed at its opposite ends and provided with a plurah ity of jet-openings 21. The relative arrangement of the aperture 15 and port 18 is such that when the tube 19 is upright the supply of gas to the pilot burner 20 will be shut off, as the said aperture and port will be thrown out of register with each other; but when the tube 19 is lowered from avertical position the port 18 will then register with the aperture 15, thus permitting the gas to flow from the burner-pipe 7 to the pilot-burner 20.

Screwed over the needle-valve 16 is a locknut 18, by means of which the said valve may be locked in its adjusted position, and said nut also operates to hold the sleeve 17 in place on the .nipple 13.

Formed in the bottom of the disk or base 8 is an aperture 22, which is normally closed by a door 23; hinged-at oneside to said base and provided at its other side with a hooked catch 24 of Well-known construction, by means of which the door is held closed. Cast integrally with the door is an upWardly-prm jecting lug 25, to which is pivoted one end of a link 26, the opposite end of which is pivoted to a laterally-projecting arm 27, sleeved on the tube l9. As shown most clearly in Fig. 2'of the drawings, the link is formed of two bars which overlap one another at their adjacent ends, and one of them is provided with slots 28, through which pass headed screws 29, that are screwed inscrew-holes formed in the other bar. It will beobvious that by loosening the screws 29 the slotted end of the one bar may be moved back and forth in a longitudinal direction to a limited extent on the screws fixed in the other bar. The length of the link may thus be altered or adjusted for the purpose hereinafter explained and then fixed in its adjusted position by tight- 'ening up the screws.

The operation of my improved attachment is as follows: When it is desired to light the lamp, the door 23 is unfastened and lowered, the stop-cock 6 having been first turned to permit the gas to flow to the burner-pipe. When the door is lowered, the tube 19,through the medium of the link 26, is swung downward, bringing the pilot-burner over the aperture 22. When in this position, gas is supplied to the pilot-burner in the manner before described, and by inserting a lighted match through the aperture the pilot-burner is lighted. The door is next swung upward and fastened to close the bottom of the globe, and in its upward movement it swings the tube 19 upward into a vertical position. Just before the tube reaches its vertical position the laterally-projecting pilot-burner passes beneath the gas-burner 11 and ignites the gas issuing therefrom and immediately thereafter, as the tube 19 reaches a vertical position, the gas is shut off from the pilotburner in the manner before described.

In lamps of the character described it is important that air be not admitted at the bottom of the globe, as it has been found in practice that if air be so admitted the incandescent mantle is rapidly consumed or destroyed, and hence the air in such lamps is admitted at the top of the globe or the hood fixed thereon. Heretofore it has been customary to provide an aperture at the bottom of the globe to afford access for lighting the burner and to provide means for closing the aperture; but through carelessness this aperture is frequently left uncovered after lightingthe lamp, whereby in windy and cold weather the mantle is damaged or destroyed. It is manifest, however, that by means of my improved arrangement such a result cannot occur, for in order to light the burner the door must of necessity be first closed.

I have shown the pilot-burner provided with a plurality of jet-orifices, and this is for the purpose of rendering the ignition of the gas-burner certain; but it will be evident that only one jet-orifice may he formed in the burner, or instead of a plurality of jet-orifices a single elongated slit maybe formed in the burner.

By making the link 26 adjustable, as described, the parts can be accurately adjusted in such manner that the moment the tube 19 has been swung up into a vertical position and the gas-burner lighted the supply of gas to the pilot-burner will be shut off.

Having described my invention, what I claim is I 1. In an incandescent gas-lamp, the combination with a gas-burner and its mantle and a gas-pipe for supplying gas to the burner, of an apertured base arranged below the burner, a globe or chimney supported on the base, a hinged door closing the aperture in the base,

a pivoted pilot-bu rner connected with the gaspipe and arranged to be swung downward from a vertical position into proximity to the said aperture, and means actuated by said door for swinging said burner into both its lowered and raised positions, substantially as described.

2. In an incandescent gas-lamp, the combination with a gas-burner and its mantle, and a gas-pipe for supplying gas to the burner, of an apertured base arranged below the burner,

a globe or chimney supported on the base, a

hinged door closing the aperture in the base, a pivoted pilot-burner connected with the gaspipe and constructed when raised to a vertical position to be shut off from said gas-pipe and when lowered to be placed in communication therewith, and means actuated by said door when the latter is opened to swing the pilot-burner down into proximity to said aperture and when closed to swing the pilotburner beneath the gas-burner to light the latter, substantially as described.-

3. In an incandescent gas-lamp, the combination with a gas-burner and its mantle and a gas-pipe for supplying gas to the burner, of an apertured base arranged below the burner, a globe or chimney supported on the base, a hinged door closing the aperture in the base, a pivoted bu rner-pipe connected with the gaspipe and provided at its free end with a laterally-projecting pilot-burner, means operating to shut off the gas from the pilot-burner when the latter is raised to a vertical position and to place the pilot-burner in communication with the gas-pipe when it islowered, and means actuated by the door when the latter is opened to swing the pilot-burner down into proximity to the said aperture and when closed to swing the pilot-burner beneath the gas-burner to light the latter, substantially as described.

4. In an incandescent gas-lamp, the combination with a gas-burner and its mantle and a gas-pipe for supplying gas to the burner, of a channeled nipple projecting laterally from the gas -pipe and communicating with the latter, a tube sleeved 'on the nipple and adapted when lowered to communicate with the passage in the nipple and when raised to a vertical position to be shut off from communication therewith, a pilot-burner fitted on the free end of said tube, an apertured base arranged on the gas-pipe beneath the gasburner, a globe or chimney supported on the base, a hinged door closing the said aperture, and means actuated by said door when the latter is opened to swing the pilot-burner into proximity to the aperture and when the door is closed operating to swing the pilot-burner into a vertical position to light the gas-burner and shut off the supply of gas from the pilot burner, substantially as described.

5. In an incandescent gas-lamp, the combination with a gas-burner and its mantle and a gas-pipe for supplying gas to the burner, of a channeled nipple projecting laterally from the gas-pipe and communicating with the latter, a tube sleeved on the nipple and adapted when lowered to communicate with the passage in the nipple and when raised to and means actuated by said door when the latter is opened to swing the pilot-burner in to proximity to the aperture and when the door is closed operating to swing the pilot-burner into a vertical position to light the gas-burner and shut off the supply of gas from the pilotburner, and a valve for controlling the passage of gas through the nipple, substantially as described.

G. In an incandescent gas-lamp, the combination with a gas-burner and its mantle and a gas-pipe for supplying gas to the burner, of a channeled nipple projecting laterally from the gas-pipe and communicating with the latter, said nipple having an aperture formed in one side and communicating with the channel in the nipple, a sleeve rotatably mounted on the nipple and provided with a port in its upper side, a burner-tube fitted in'said port and adapted when turned downward to register with the aperture in the nipple, a pilotburner fitted on the free end of the burnertube, an apertured base fixed beneath the gas-burner, a globe or chimney fitted on the base, a hinged door closing the said aperture, and means actuated by the door when the latter is opened to lower the pilot-burner and place it in communication with the gas-pipe and when closed to raise the pilot-burner to a vertical position and light the gas-burner and shut off the gas from the pilot-burner, substantially as described.

7. In an incandescent gas-lamp, the combination with a gas-burner and its mantle and a gas-pipe for supplying gas'to. the burner, of a channeled nipple projecting laterally from the gas-pipe and communicating with the latter and having an aperture formed in one of its sides, a sleeve rotatably mounted on the nipple and provided with-a port in its upper side, a burner-tube fitted in said port and adapted when turned downward to register with the aperture in the nipple, a pilot-burner fitted on the free end of the burner-tube, and a needle-valve fitted in the end of the nipple and operating to control thepassage of the gas therethrough, substantially as described. 8. In an incandescent gas-lamp, the combination with a gas-burner and its mantle and a gas-pipe for supplying gas to the burner, of a channeled nipple projecting laterally from the gas-pipeand-eommunicating with the latter, said nipple having an aperture formed in one side and communicating with the channel in the nipple, a sleeve rotatably mounted on the nipple and provided with a port in its upper side, a burner-tube fitted in said port and adapted when turned downward to regis-- ter with the aperture in the nipple, a threaded needle-valve fittedin the end of the nipple and operating to control the passage of the gas therethrough, a lock-nut fitted on the neodle-valve to lock the latter in its adjusted position and operating to hold the'sleeve on the nipple, and a pilot-burner fixed on the :free end of the pivoted burner-tube, substantially as described.

9. In an incandescent gas-lamp, the combination with a gas-burner, and its mantle and a gas-pipe for supplying gas to the burner, of an apertured base arranged below the burner, a globe or chimney supported on the base, a hinged door closing the aperture in the base, a pivoted pilot-burner connected with the gaspipe, and a link pivotally connected at one end to said door and at its other end to the pilot-burner, whereby when the door is opened the pilot-burneris swung down into proximity to the aperture in position to be lighted, and when the door is closed the pilot-burner is raised vertically beneath the gas-burner to light the latter, substantially as described.

10. In an incandescent gas-lamp, the combi* nation with a gas-burner and its mantle and a gas-pipe for supplying gas to the burner, of an apertu red base arranged below the burner, a globe or chimney supported on the base, a hinged door closing the aperture in'the base,

a pivoted pilot-burner connected with the gaspipe, and a link pivotally connected at one end to said door and at its other end to the pi lot-burner,whereby,when the door is opened the pilot-burner is swung down into proximity to the aperture in position to be lighted, and when the door is closed the pilot-burner is raised vertically beneath the gas-burner to light the latter, and means for varying the length of the link, substantially as described. In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN E. PRUNTY.

Witnesses:

GEO. W. REA, F. B. KEEFER. 

